Hioki SS7012 User manual
i
Contents
Introduction .......................................................................... 1
Confirming Package Contents ............................................. 2
Safety Information ................................................................ 3
Operating Precautions ......................................................... 7
Chapter 1 Overview 13
1.1 Product Overview .............................................. 13
1.2 Features ............................................................ 14
1.3 Names and Functions of Parts .......................... 15
1.4 Sourcing and Measurement Flowchart ............. 23
Chapter 2 Sourcing, Measurement and
Loop test Preparation 25
2.1 Supplying Power ............................................... 25
Installing or Replacing the Batteries .................. 25
Connecting the AC Adapter (Option) ................ 27
2.2 Connecting the Input Cord and the Test Lead .. 28
2.3 Turning the Power On and Off .......................... 33
2.4 Pre-Operation Inspection .................................. 34
Chapter 3 Sourcing 37
3.1 Sourcing Example ............................................. 38
3.2 Sourcing Constant Voltage and
Constant Current ............................................... 39
3.3 Sourcing Thermoelectromotive Force ............... 43
3.4 0°C Check of the
100 Ω Resistance Thermometer ....................... 50
3.5 Output Monitor Function .................................... 51
3.6 Memory Source Function .................................. 54
Saving setting value to memory ........................ 55
Recall sourcing .................................................. 59
SS7012A981-08
ii
Scan sourcing ....................................................61
Initializing setting values ....................................63
3.7 When setting value is flashing ...........................65
Chapter 4 Measurement 67
4.1 Measurement Example ......................................67
4.2 Voltage Measurement and
Current Measurement ........................................68
4.3 Temperature Measurement ...............................71
Chapter 5 Loop Test 75
5.1 Loop Test Overview ...........................................75
5.2 Testing a Distributor (4-20 mA) .........................76
5.3 Testing a two-wire transmitter ...........................79
Chapter 6 Other Function 81
6.1 USB Communication Function ..........................81
Chapter 7 Specifications 83
7.1 General Specifications .......................................83
7.2 Accuracy ............................................................86
Chapter 8 Maintenance and Service 91
8.1 Troubleshooting .................................................91
8.2 Replacing the Circuit Protection Fuse ...............94
8.3 Cleaning ............................................................96
8.4 Error Indication ..................................................97
8.5 Other Indication .................................................97
8.6 When calibrating the instrument ........................98
Index Index 1
Introduction 1
Thank you for purchasing the HIOKI Model SS7012 DC Signal
Source. To obtain maximum performance from the instrument,
please read this manual first, and keep it handy for future refer-
ence.
Introduction
Confirming Package Contents
2
When you receive the instrument, inspect it carefully to ensure
that no damage occurred during shipping. In particular, check
the accessories, panel switches, and connectors. If damage is
evident, or if it fails to operate according to the specifications,
contact your dealer or Hioki representative.
Confirming Package Contents
Confirm that these contents are provided.
SS7012 DC Signal Source (1)
Instruction Manual (1)
9168 Input Cord (1 set)
LR6 alkaline batteries (4)
L9170-10 Test lead (1 set)
Spare fuse (1)
Safety Information 3
Options
9184 Temperature Probe (reference junction compensation)
9380 Carrying Case (Holds main unit only, soft case)
9782 Carrying Case (Holds options, hard case)
9445-02 AC Adapter (For Japan, US, and Canada)
9445-03 AC Adapter (For EU)
SS9000 Communication Package
(Includes USB cable and USB driver software)
Safety Information
This instrument is designed to comply with IEC 61010
Safety Standards, and has been thoroughly tested for
safety prior to shipment. However, mishandling during use
could result in injury or death, as well as damage to the
instrument. Using the instrument in a way not described in
this manual may negate the provided safety features.
Be certain that you understand the instructions and pre-
cautions in the manual before use. We disclaim any
responsibility for accidents or injuries not resulting directly
from instrument defects.
Safety Information
4
This manual contains information and warnings essential for
safe operation of the instrument and for maintaining it in safe
operating condition. Before using it, be sure to carefully read the
following safety precautions.
The following symbols in this manual indicate the relative impor-
tance of cautions and warnings.
Safety Symbols
In the manual, the symbol indicates particularly
important information that the user should read
before using the instrument.
The symbol printed on the instrument indicates
that the user should refer to a corresponding topic in
the manual (marked with the symbol) before
using the relevant function.
Indicates a grounding terminal.
Indicates DC (Direct Current).
Indicates the ON side of the power switch.
Indicates the OFF side of the power switch.
Indicates that incorrect operation presents
an extreme hazard that could result in seri-
ous injury or death to the user.
Indicates that incorrect operation presents a
significant hazard that could result in serious
injury or death to the user.
Indicates that incorrect operation presents a
possibility of injury to the user or damage to
the instrument.
Indicates advisory items related to perfor-
mance or correct operation of the instru-
ment.
Safety Information 5
Symbols for Various Standards
WEEE marking:
This symbol indicates that the electrical and
electronic appliance is put on the EU market
after August 13, 2005, and producers of the
Member States are required to display it on the
appliance under Article 11.2 of Directive 2002/
96/EC (WEEE).
Ni-MH
This is a recycle mark established under the
Resource Recycling Promotion Law (only for
Japan).
This symbol indicates that the product conforms
to regulations set out by the EC Directive.
Other Symbols
Indicates a prohibited action.
(p. #) Indicates the location of reference information.
[ ] The names of setting objects are indicated by
square brackets [ ].
OUTPUT
(Bold char-
acters)
Bold alphanumeric characters in this manual indi-
cate key labels.
The screen of this instrument displays characters in the follow-
ing manner.
Safety Information
6
To ensure safe operation of measurement instruments IEC
61010 establishes safety standards for various electrical envi-
ronments, categorized as CAT II to CAT IV, and called measure-
ment categories.
Using a measurement instrument in an environment designated
with a higher-numbered category than that for which the instru-
ment is rated could result in a severe accident, and must be
carefully avoided.
Use of a measurement instrument that is not CAT-rated in CAT II
to CAT IV measurement applications could result in a severe
accident, and must be carefully avoided.
Measurement categories
CAT II
Primary electrical circuits in equipment connected to an AC
electrical outlet by a power cord (portable tools, household
appliances, etc.)
CAT II covers directly measuring electrical outlet recepta-
cles.
CAT III
Primary electrical circuits of heavy equipment (fixed instal-
lations) connected directly to the distribution panel, and
feeders from the distribution panel to outlets.
CAT IV
The circuit from the service drop to the service entrance,
and to the power meter and primary overcurrent protection
device (distribution panel).
Operating Precautions 7
Follow these precautions to ensure safe operation and to obtain
the full benefits of the various functions.
Before using the instrument for the first time, verify that it oper-
ates normally to ensure that no damage occurred during storage
or shipping. If you find any damage, contact your dealer or Hioki
representative.
Operating temperature and humidity: 0 to 40°C at 80%RH or
less (non-condensating)
Temperature and humidity range for guaranteed accuracy:
23±5°C, 80%RH or less (non-condensating)
Operating Precautions
Preliminary Checks
Instrument Installation
Avoid the following locations that could cause an accident or damage
to the instrument.
Exposed to direct
sunlight
Exposed to high tem-
perature
In the presence of cor-
rosive or explosive
gases
Exposed to liquids
Exposed to high hu-
midity or condensa-
tion
Exposed to strong
electromagnetic fields
Near electromagnetic
radiators
Exposed to high lev-
els of particulate dust
Near electromagnetic
radiators (e.g., high-
frequency induction
heating systems and
IH cooking utensils)
Subject to vibration
Correct measurement may be impossible in the pres-
ence of strong magnetic fields, such as near transform-
ers and high-current conductors, or in the presence of
strong electromagnetic fields such as near radio trans-
mitters.
Operating Precautions
8
Handling the Instrument
The maximum rated voltage between input terminals and
ground is 30 VAC/ 60 VDC. Attempting to measure voltages
exceeding 30 VAC/ 60 VDC with respect to ground could
damage the instrument and result in personal injury.
• This instrument is designed for safe operation only at low
voltage. Ensure that no more than 60 V is present
between any terminal and ground, and that the potential
difference between any two terminals does not exceed 60
V. The instrument cannot be guaranteed in an overrange
situation, such as due to an inadvertent electric shock or
faulty insulation, and we cannot accept responsibility for
any consequences that might occur from misuse.
• The output terminals and the voltage and current input
terminals (terminals for the standard resistor) are all iso-
lated. Before connecting the terminals, ensure that the
target device will not provide excessive output to, or
require excessive input from, the terminals. The instru-
ment cannot be guaranteed in an overrange situation,
such as due to an inadvertent electric shock or faulty
insulation, and we cannot accept responsibility for any
consequences that might occur from misuse.
• Ensure that the input does not exceed the maximum input
voltage or current to avoid instrument damage, short-cir-
cuiting and electric shock resulting from heat building.
• Do not allow the instrument to get wet, and do not take
measurements with wet hands. This may cause an elec-
tric shock.
• The case is not hermetically sealed for protection against
explosion, so do not use in a flammable atmosphere.
Operating Precautions 9
• When the power is turned off, do not apply voltage to the volt-
age input terminals. Doing so may damage the instrument.
• To avoid damage to the instrument, protect it from physical
shock when transporting and handling. Be especially careful
to avoid physical shock from dropping.
• If this instrument has been vibrated or impacted, restart it
before use.
• Before sourcing or measurement, make sure of the function
position. If current or voltage in excess of sourcing or mea-
surement range is input, the instrument may be damaged.
• Note that the instrument may be damaged if the applied volt-
age or current exceeds the measurement range.
• If output is impossible when is displayed which indicates
outputting, set to with OUTPUT ON/OFF key and set
output to ON again.
• To avoid corrosion and damage to this instrument from battery
leakage, remove the batteries from the instrument if it is to be
stored for a long time.
To avoid problems with battery operation, remove the
batteries from the instrument if it is to be stored for a
long time.
Operating Precautions
10
Handling the Cords
• Before using the instrument, make sure that the insula-
tion on the test lead and input cord is undamaged and
that no bare conductors are improperly exposed. Using
the instrument in such conditions could cause an electric
shock, so contact your dealer or Hioki representative for
repair.
• Use the 9168 Input Cord with DC 28 V or less.
If this level is exceeded, electric shock may occur.
• Always turn both devices OFF when connecting and dis-
connecting an interface connector. Otherwise, an electric
shock accident may occur.
• To avoid breaking the test lead and input cord, do not bend or
pull them.
• For safety reasons, when taking measurements, only use the
L9170-10 Test lead provided with the instrument.
Operating Precautions 11
Handling the AC Adapter and the Nickel Hydride
Batteries
• Turn the instrument off before connecting the AC adapter
to the instrument and to AC power.
• Use only the supplied Model 9445-02 AC Adapter or
Model 9445-03 AC Adapter. AC adapter input voltage
range is 100 to 240 VAC (with ±10% stability) at 50/60 Hz.
To avoid electrical hazards and damage to the instrument,
do not apply voltage outside of this range.
• To avoid damaging the power cord, grasp the plug, not the
cord, when unplugging it from the power outlet.
The nickel hydride battery is subject to self-discharge.
Be sure to charge the nickel hydride batteries before ini-
tial use. If the battery capacity remains very low after
correct recharging, the useful battery life is at an end.
1.1 Product Overview 13
This instrument is a compact DC signal source (calibrator).
It can perform maintenance or loop tests of instrumentation sys-
tems and can be operated from a computer via a USB cable.
Furthermore, it can calibrate thermometers and measure DC
voltage and DC current.
Overview Chapter 1
1.1 Product Overview
Two-wire transmitter and
distributor tests (4-20mA)
can be easily performed.
(Loop tests)
Source waveforms can
be freely programmed
through communica-
tion with a computer.
1.2 Features
14
1.2 Features
Source function (p.39) (p.43)
Sourcing DC voltage from -25.000 V to +25.000 V (minimum
resolution 100 μV), and DC current from -25.000 mA to
25.000 mA (minimum resolution 1 μA). Sourcing thermoelec-
tromotive force by setting temperature (thermocouples: K, E,
J, T, R, S, B, N; JIS C1602-1995, IEC 584).
Measure function (p.68) (p.71)
Measurement of DC voltage from -28.000 V to +28.000 V
(minimum resolution 100 μV), and of DC current from -
28.000 mA to 28.000 mA (minimum resolution 1 μA). Tem-
perature measurement from -25°C to 80°C with the optional
Model 9184 Temperature Probe.
Loop test (p.75)
The output of this instrument is bipolar and it can sink cur-
rent. Therefore, loop test in the instrumentation system is
possible.
Output monitor function (p.51)
This function monitors the applied current of the constant
voltage source.
This function monitors the applied voltage of the constant
current source.
This function monitors the reference junction temperature of
the thermoelectromotive force source.
Memory source function (p.54)
Up to 20 units of source data (settings) for each function can
be saved to memory. Settings saved to memory can be
sourced in recall source mode or scan source mode.
AC power is not required for operation
Common LR6 alkaline batteries or nickel hydride batteries
support use in situations where AC power is not available.
Continuous long-term operation
The optional Model 9445-02 AC Adapter or 9445-03 AC
Adapter allows continuous long-term operation.
1.3 Names and Functions of Parts
16
Right side
RJ sensor terminal
Connect the optional Model 9184
Temperature Probe (reference
junction compensation).
(p.30) (p.71)
USB port
The SS7012 can communicate
with a computer via a USB cable.
(p.81)
AC adapter terminal
Connect the optional Model 9445-02 AC
Adapter or 9445-03 AC Adapter.The input
voltage range is 9 V DC±10% and the
adapter has a positive center pin. (p.27)
Power switch
Turns the power for the instru-
ment on or off. (p.33)
: Power switch OFF
: Power switch ON
1.3 Names and Functions of Parts
18
Terminals
Voltage input terminal
Inputs voltage for voltage
measurement. Input resis-
tance is about 1 MΩ.
Current input terminal/
Terminal for the standard resistor
Current input
Inputs current for current measurement
function. The SS7012 has built-in input
protection fuse. The input resistance of
current detection and input protection fuse
is about 30 Ω.
Standard resistor
When current measurement function is
off, a 100 Ω standard resistor is connected
for the 0°C check of the 100 Ω standard
resistance thermometer.
Output terminal
When output is on, the setting
value will be output. This termi-
nal is shorted with about 50 kΩ
resistance when output is off.
The SS7012 has built-in output
protection fuse.
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